Opt out for new message notifications doesn't work (fix provided)

Issue: Email notifications still get sent when a user opts out using the notification settings form. The bug is in the function that sends the mail, where there are two errors on the line that checks whether the user’s ‘notification_messages_new_message’ setting == “no”.

Fix: Around line 12 in file “bp-messages-notifications.php”, in function “messages_notification_new_message”, the line is currently: